Combined erasing shield and protector



Sept. 12, 1950 F. H. sla i sou 2,522,111

COMBINED ERASING SHiELD AND PROTECTOR Filed April 5, 1948 IN VEN TOR.

Patented Sept. 12, 1950 ome s-mes PATENT OFFICE commas ERASING sn E nAND v rao'rno'roa Frederic H. Gibson, Westwood, Application April 5,1948, Serial No. 18,965

The improvements relate to means for making erasures in written ortypewritten matter, sketches, drawings and the like without disturb ingadjacent matter-not intended to be erased, protecting the paper r thelike on which the erasure is to be made, and providing for a singleinstrument which may be used wherethere are original and carbon copieswhereby erasure on the original or topmost carbon does not mark orsmudge the subsequent copies. 1

This invention, is in the nature of an improvement on my copendingapplication Serial Number740,801, filed April 11, 1947.

One of the objects of this invention is w provide a readily accessibleand compact protecting plate, eraser and guide which may be quickly"inserted between sheets on the platen of a typewriting machine'orremoved therefrom in order to make specific erasures Without affectingthe sheets or rest of the typewritten matter.

Another object of the invention is to provide a combination erasureshield, guide and backing plate whereby when an erasure is to be madethe device may be easily slipped into place and an erasure made withoutallowing the effect of the erasure to appear on carbon copies beneath ornear the point at which the erasure is made.

Another object of the invention is to provide a combination eraser,erasing shield and erasing shield holder which may be kept easilyaccessible and as a compact unit. Other objects and advantages will beapparent from the following description and the accompanying drawingsreferred to therein. I

Referring to said drawing:

Fig. 1 is a perspective of the protecting plate i 3 Claims. (01. 120 41)slightly apart except when they are purposely pressed together. Thisspring member 5 may also be made of a light metal or plastic and joinedto the arm's I and 2 at 5 by glue or other fastening means or by fusingor spot welding.

means of rivets 8 an 9 or other suitable securingmeans. i

The arm 2 has rigidly fixed to it at the oppo site end from theaforesaid joinder 3, an erasing shield l0 which is 'afiixed by means ofthe rivets H and {2 or other suitable means. The erasing shield H] hascut into its lower portion the usual aperturessuch as l3, l4, l5 and I6for'placement over the letters, marks or words to be erased.

.Shield ID has afiixed on the side which is attach'ed'to the arm 2 thesocket member of a snap fastener ll or the like whose complemem tarystud portion 18 is attached to an eraser was shown and "described in mysaid copencb ing application.

In the preferred form of this invention, the arms I and 2 are of metal,plastic or other durable resilient material of a thickness ofapproximately .040th inch while the protecting plate and erasure plateare preferably of, a thickness of .010 inch, although these thicknessesmay be varied to a considerable extent. The purpose of having a thin buttough erasure shield and protective shield is primarily to allow theshield to be placed between asheet or sheets of paper in a typewriterand yet allow the two erasing and protecting shields l and 2 toaccommodate themselves to the contour of the typewriter platen.

In operation, when it is desired to erase a letter or word the operatorusing the arms I and 2 slips the erasing shield and protective shieldover the upper sheet in the typewriter so that the sheet on which theerasure'is to be made is between the erasing shield In and theprotective shield 1 and the protective shield is between the sheet uponwhich the erasure is to be made and the carbon sheetby which the copy ismade. The erasure shield is then adjusted so that one of the aperturesl3, I l, l5 or it is over the matter to be erased, andat any pointlengthwise or crosswise of the sheet. The operator now unsnaps theeraser l9 and makes the erasure through the correct aperture. Erasuresmay now be made over any carbon copies in the same manner and whencompleted the eraser I9 is again snapped onto its complementary buttonready for the next operation.

It will'be noted that the protecting shield l and the erasure shield H)are offset laterally from the length of the arms I and 2 Thisconstruction is necessary so that the operator may easily avoid anyobstructions at the side of the typewriter.

In the preferred form shown by the drawing, I have shown the arms I and2 made of two separate strips of material although I do not limit myselfto this feature, as it is possible to make the arms of a single piecebent in the middle and held tightly separated by the spring member '5 orby their own resiliency. If the material connecting the flexible platesI and I0 is made of a tapered or spring-like substance such as thinsteel, it is possible to eliminate the spring member 5 entirely as thenatural spring of the connecting piece will have a tendency to hold theplates 1 and I0 slightly apart.

Various other modifications in the details of construction of theexemplary embodiment shown and described may also be made withoutdeparting from the scope or purview of the invention.

What I claim is:

1. In a device of the character described a plate of thin flexiblematerial having apertures therein through which erasures may be made, arelatively rigid arm aflixed to said apertured plate, a second plate ofthin flexible material, a relatively rigid arm to which said secondplate is connected, said arms extending from said plates being joinedtogether at a point distant from the plates so that said apertured platemay be superposed over said second plate and a spring member betweensaid arms near their junction by which they are normally separated.

'2. In a device of the character described, a plate of thin flexiblematerial having apertures therein through which erasures may be made, athin relatively rigid arm rigidly afiixed to said apertured plate, asecondplate of thin flexible material, a thin relatively rigid armconnected thereto, said arms being joined at an angular displacement andsaid plates being ofiset laterally from said arms and joined together atone end by a spring member by which said plates are normally heldseparated.

3. In a device of the character described, a plate of thin flexiblematerial having apertures therein through whicherasures' maybe made, a

relatively rigid arm afixed to said apertured plate, a second andcoincident plate of thin flexible material and a second relatively rigidarm to which it is connected, each of said plates afiixed to its saidarm so that the bottom of the said plate and the top of said arm is inangular displacement, said arms extending to a point distant from saidplates and being joined together at a distance from said plates so thatsaid apertured plate may be superposed over said second plate, saidplates and arms being normally otherwise separated from one another andheld apart by a spring member, whereby a plate and arm may be placed oneon each side of a sheet on which an erasure is to be made withoutdisturbing said sheet.

FREDERIC I-l. GIBSON.

REFERENCES CITED The following references are of record'in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 680,227 Copland Aug. 13, 19012,319,871 Leonard May 25, 1943

